Regional anesthesia

Is It Time to Reassess Local Anesthetic and Adjuvant Mixtures? A Narrative Review of Practice, Evidence, and Risks

AnesthesiologyPublished Narrative review

Study context

Population
Use of mixtures of local anesthetics or local anesthetic-adjuvant mixtures in regional anesthesia
Comparison
LA mixtures or LA-adjuvant mixtures in RA
Outcome
Chemical, pharmacologic and clinical implications of LA mixture use

Main finding

As reported in the abstract

  • Critical limitations: risk of particle formation, lack of pharmacologic rationale, unclear propensity for systemic toxicity
  • Unclear safety profile and equivocal clinical benefit of certain LA and LA-adjuvant mixtures
  • Recent in vitro evidence: extensive crystallization in LA or LA-adjuvant mixtures, incl. lidocaine plus sodium bicarbonate

Original publication

Is It Time to Reassess Local Anesthetic and Adjuvant Mixtures? A Narrative Review of Practice, Evidence, and Risks. Anesthesiology. Published 24 October 2025. doi:10.1097/aln.0000000000005683

Composed by AI from the published abstract and checked against it. How Briefs are made →

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